California

Patent attorneys in California

California hosts 9,553 active patent practitioners registered with the USPTO Office of Enrollment and Discipline. Patent attorneys and patent agents can both prepare and file patent applications, but only patent attorneys can also offer legal advice on prosecution strategy, freedom-to-operate analyses, and infringement opinions in California. Practitioners are concentrated across 20 cities, with the largest clusters in the metros listed below. Notable firms with multiple registered practitioners in the state include Graphite Bio, Johnson & Johnson, and The First American Corporation.

Top cities in California

All practitioners in California

Wayne Szeto

Reg. 59672

Patent attorney

Graphite Bio

South San Francisco, CA · 94080

650-484-0886

Khoi Quang Ta

Reg. 47300

Patent attorney

Johnson & Johnson

Irvine, CA · 92618

513-885-6847

Rouzbeh Tabaddor

Reg. 45312

Patent attorney

The First American Corporation

Santa Ana, CA · 92707

714-250-6751

Raymond R Tabandeh

Reg. 43945

Patent attorney

LEWIS ROCA ROTHGERBER CHRISTIE LLP

Glendale, CA · 91209-9001

626-795-9900

Amir A. Tabarrok

Reg. 57137

Patent attorney

KXT Law LLP

Redwood City, CA · 94061

650-466-6360

Ardeshir Tabibi

Reg. 48750

Patent attorney

Alston & Bird

Palo Alto, CA · 94304

650-838-2000

William B Tabler· III

Reg. 53668

Patent attorney

Flextronics

San Jose, CA · 95002

408-576-7000

Joseph R. R. Tache

Reg. 36027

Patent attorney

Pillsbury Winthrop Shaw Pittman LLP

San Diego, CA · 92130

858-847-4109

Hirohisa Tachibana

Reg. 58914

Patent attorney

Tachibana & Associates

Palo Alto, CA · 94306

650-387-0073

Adam H Tachner

Reg. 40343

Patent attorney

Palo Alto, CA · 94306

650-279-6699

George Tacticos

Reg. 28347

Patent attorney

San Francisco, CA · 94109

415-440-8569

Benjamin D Taggart

Reg. 78732

Patent attorney

San Diego, CA · 92123

317-777-9945

David A Taggart

Reg. 42178

Patent attorney

Palos Verdes Peninsula, CA · 90274

310-336-4211

Jeffrey T Taggart

Reg. 68787

Patent attorney

Jeff Taggart Law

San Diego, CA · 92119

619-929-0237

Daniel D Tagliaferri

Reg. 43178

Patent attorney

Law Office of Daniel D. Tagliaferri

Alameda, CA · 94501

510-521-6980

Cynthia-Clare Tagoe

Reg. 74444

Patent attorney

QSC, LLC

Costa Mesa, CA · 62626

510-838-5683

Saman Taherian

Reg. 53669

Patent attorney

Saratoga, CA · 95070

408-872-1064

Cindy R Tahl

Reg. 60381

Patent attorney

Fate Therapeutics, Inc.

La Jolla, CA · 92037

858-875-1826

Sam Kevin Tahmassebi

Reg. 45151

Patent attorney

TechLaw LLP

San Diego, CA · 92131

619-203-2579

James S Tak

Reg. 46367

Patent attorney

Lawrence Livermore National Laboratory

Livermore, CA · 94551

925-422-7274

Moeka Takagi

Reg. 74407

Patent attorney

Perkins Coie

Palo Alto, CA · 94304

650-838-4494

Heather E. F. Takahashi

Reg. 78418

Patent attorney

Munger, Tolles & Olson LLP

Los Angeles, CA · 90071

213-683-9100

Mark M Takahashi

Reg. 38631

Patent attorney

Lorenz & Kopf, LLC

San Diego, CA · 92130

858-461-7036

Robert K Takara

Reg. 63300

Patent attorney

Calabasas, CA · 91302

619-796-2850

Jonathan H Takei

Reg. 36985

Patent attorney

Ipvalue Management, Inc.

Santa Clara, CA · 95054

408-869-4029

Shigeki Takeuchi

Reg. 81462

Patent attorney

Kim & Stewart, LLP

San Jose, CA · 95113

408-899-6442

Cary D Talbot

Reg. 47123

Patent agent

Medtronic Diabetes

Northridge, CA · 91325

818-576-5493

Christopher G Talbot

Reg. 47124

Patent agent

Emerald Hills, CA · 94062

408-816-0588

James N Talbott

Reg. 35702

Patent attorney

Talbott & Talbott

Malibu, CA · 90264

310-457-1387

Jeffrey C Talkington

Reg. 58381

Patent attorney

Goodwin Procter, LLP

Menlo Park, CA · 94025

650-752-3224

Common questions

Do I need a patent attorney based in California?

No. Every USPTO-registered patent practitioner is licensed to file applications on behalf of inventors in any state, regardless of where the practitioner's office is. Choosing a California-based practitioner can simplify in-person inventor signings, local meetings, and same-time-zone calls, but it is not a legal requirement.

How many patent attorneys are licensed in California?

9,553 active USPTO-registered patent practitioners list a California office address on the OEDCI roster. This includes both patent attorneys (who can also offer legal advice) and patent agents (who can prepare and file patents but not offer broader legal advice).

What is the difference between a patent attorney and a patent agent?

Both pass the USPTO Patent Bar and can prepare, file, and prosecute patent applications. Only patent attorneys also hold a state bar license, meaning they can additionally offer legal advice on infringement, licensing, and litigation strategy. Patent agents tend to charge less per hour and are common at large in-house IP departments.